The 26-year-old from Tulsa, the 200m runner-up at the Tokyo and Paris Olympics, defeated Britain's Zharnel Hughes by 0.29 of a second with Jamaica's Oblique Seville third, also in 20.13.

Andrew Coscoran produced another excellent performance to secure a runner-up finish in the long-distance category at the Grand Slam Track event in Miami on Sunday – the Dubliner finishing third in the ...